CN101404297B - Thin-film solar cell and its production method - Google Patents
Thin-film solar cell and its production method Download PDFInfo
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- CN101404297B CN101404297B CN2008100426668A CN200810042666A CN101404297B CN 101404297 B CN101404297 B CN 101404297B CN 2008100426668 A CN2008100426668 A CN 2008100426668A CN 200810042666 A CN200810042666 A CN 200810042666A CN 101404297 B CN101404297 B CN 101404297B
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- film solar
- thin
- backboard
- solar cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a thin film solar cell and a preparation method thereof. The thin film solar cell sequentially comprises a substrate, a front electrode, a semiconductor layer, a back electrode, an adhesive layer and a back sheet. The adhesive layer is made of epoxy resin; the back sheet is made of glass fiber reinforced plastic or organic glass. The solar cell and the preparation method can effectively reduce the cost of the adhesive layer and the back sheet, and can also add a multifunctional material layer so as to supplement the performances (such as water resistance, insulativity and the like) during a packaging period and to improve the packaging performance.
Description
Technical field
The present invention relates to material of a kind of solar cell and preparation method thereof.
Background technology
The structure of general thin-film solar cells as shown in Figure 1, wherein 8 is thin-film solar cell module, adopts PUR (as EVA) as gluing layer 6 ' mostly, TPT or PVB are as backboard 7 '.And after backboard 7 ' is gone up packed cell 9 (being followed successively by preceding electrode, semiconductor layer, back electrode), before its encapsulation, there are not other steps.
PUR that traditional packaged type adopts and TPT or PVB cost are higher.Adopt the mode of production of PUR to heat, vacuumize, the step of lamination, energy consumption are also than higher.Traditional hull cell does not have the additional of multilayer functional layer behind the back electrode, but performance simple in structure is low.
Summary of the invention
The objective of the invention is by a kind of thin-film solar cells and preparation method thereof is provided, can effectively reduce the cost of gluing layer and backboard, and can also add the multifunctional material layer, thereby replenish the performance in the encapsulation process (as resistance to water, insulating properties etc.), perfect encapsulation performance.
The present invention realizes that the technical scheme of above-mentioned purpose is: a kind of thin-film solar cells, comprise the substrate that is arranged in order, preceding electrode, semiconductor layer, back electrode, gluing layer, backboard, and the composition of described gluing layer is an epoxy resin; The composition of backboard is fiberglass or polymethyl methacrylate.
Preferably, the thickness≤0.5mm of described gluing layer.
Preferably, when described backboard was fiberglass, its thickness was 0.5～1mm.
Preferably, when described backboard was polymethyl methacrylate, its thickness was 1～3mm.
Preferably, also comprise a functional layer, be located between back electrode and the gluing layer.
Preferably, described functional layer is one or more layers.
Preferably, the material of described functional layer is a silicon dioxide, wherein a kind of of aluminium dioxide, silicon nitride.
A kind of preparation method of thin-film solar cells, solar cell comprises substrate, preceding electrode, semiconductor layer, back electrode, gluing layer, backboard successively, may further comprise the steps:
1) on substrate, forms the structure of preceding electrode, semiconductor layer and back electrode by the technology of film forming and laser ablation;
2) the good substrate of lamination is carried out edging and handle, the edging width is 5～15mm, picks out the lead-in wire of electrode;
3) on back electrode, evenly be coated with the gluing layer that mixes, cover backboard, under the condition that vacuumizes, utilize laminater to carry out lamination, gluing layer thickness≤0.5mm;
4) leave standstill the gluing layer is solidified, carry out the edge sealing frame and handle.
Preferably, described step 3) is for to establish a functional layer by the method for chemical vapour deposition (CVD) or magnetron sputtering on back electrode, and the gluing layer that even coating mixes on functional layer, covers backboard, under the condition that vacuumizes, utilize laminater to carry out lamination, gluing layer thickness≤0.5mm.
The present invention is owing to adopted above technical scheme, make it compared with prior art, have the following advantages and good effect: reduce the cost and the energy consumption of gluing layer, backboard, and can add the multifunctional material layer, improved its service behaviour (as resistance to water, insulating properties etc.).
Description of drawings
Fig. 1 is the solar battery structure schematic diagram of prior art.
Fig. 2 is a solar cell polishing schematic diagram of the present invention.
Fig. 3 is a solar battery structure schematic diagram of the present invention.
Fig. 4 is the structural representation of preceding electrode of the present invention, semiconductor layer, back electrode.
Among the figure, 1 substrate, electrodes, 3 semiconductor layers, 4 back electrodes, 5 functional layers, 6,6 ' gluing layer, 7,7 ' backboard before 2,8 thin-film solar cell modules, 9 batteries, backboard A cell deposition film portion, the B part of polishing.
Embodiment
As shown in Figure 3, the present invention comprises substrate 1, preceding electrode 2, semiconductor layer 3, back electrode 4, functional layer 5, gluing layer 6, backboard 7 successively.
Substrate 1 adopts glass plate or light-transmissive resin film.Wherein glass plate is large-area cheap sheet material, and as with silicon dioxide, sodium oxide molybdena, calcium oxide are the level and smooth kickboard glass of two interareas of main component, its transparency and insulation property height.
Before electrode 2 adopt transparent conductive oxides (this oxide also can by the doping improved performance).Wherein the transparent conductive oxides film can adopt ITO (indium tin oxide), tin ash, ZAO (doped zinc oxide aluminium) etc.
Preceding electrode 2 not only has the effect as electrode, can also make the light that passes from substrate 1 see through himself, arrives semiconductor layer 3, transforms thereby produce photoelectricity.As shown in Figure 4, preceding electrode 2, back electrode 4 surfaces also can form the structure of micro concavo-convex texture, thereby improve the light incident efficient of semiconductor layer 3.
The composition of gluing layer 6 is an epoxy resin, and its thickness≤0.5m can play insulating effect and adhesive effect m.
The material of backboard 7 is fiberglass or polymethyl methacrylate, and when it was fiberglass, thickness was 0.5～1mm; During for polymethyl methacrylate, thickness is 1～3mm.
The manufacture method of solar cell of the present invention is as follows:
At first, the structure (Fig. 4) of electrode 2, semiconductor layer 3 and back electrode 4 adopted to such an extent that be traditional handicraft here before the technology by film forming and laser ablation on substrate 1 formed, and repeated no more.Adopting the method for chemical vapour deposition (CVD) or magnetron sputtering to produce multilayer functional layer 5 one on this back electrode 4, can be silicon dioxide, aluminium dioxide, or silicon nitride etc.
The good substrate 1 of lamination is carried out edging handle, the edging width is 5～15mm, as shown in Figure 2, and A cell deposition film portion, the B part of polishing.Its purpose is to avoid transparent oxide electric conducting material coating conduction, picks out the lead-in wire of electrode then.
On functional layer, evenly be coated with the gluing layer 6 (epoxy resin) that mixes, cover backboard 7 (fiberglass or polymethyl methacrylate), under the condition that vacuumizes, utilize laminater evenly to pressurize, make bondline thickness even, gluing layer 6 thickness≤0.5mm; Adopt vacuum lamination not need heating, can avoid air to sneak into.
Fix at last, leave standstill and make gluing layer 6 (epoxy resin) curing, carry out the edge sealing frame and handle.
Embodiment 1
At first, the tin dioxide thin film of on the glass substrate 1 of area with 1.1 * 1.4m and 3mm thickness, making the about 700nm of thickness with chemical gaseous phase depositing process as electrically conducting transparent before electrode 2, and semiconductor layer 3, method with magnetron sputtering is made back electrode 4 zinc-oxide films, and functional layer 5 aluminium dioxide films are to improve insulation property.And adopted the technology of laser ablation before plating functional layer 5, to realize functional structure as shown in Figure 4, above-mentioned is the traditional handicraft of battery production.
Wherein semiconductor layer 3, the structure that has adopted noncrystal photoelectricity to change.
Then, finish edging operation, it is wide that the membrane structure of lamination on the substrate 1 is ground off 8mm, the lead-in wire of electrode before and after drawing.
Then, the one side of cell substrates 1 plated film evenly coating mix not solidified gluing layer 6 (epoxy resin), above the backboard 7 (fiberglass) of 1mm thickness is placed on, under the condition of vacuum, carry out lamination then.Finally leave standstill,, carry out the edge sealing frame and handle by the time gluing layer 6 (epoxy resin) solidifies fully.
To the solar film battery module 8 of finished product, light source uses xenon lamp and halogen lamp, irradiation AM1.5 (100mW/cm
2) spectrum and the light of light intensity, under 25 ℃, carry out the characteristic of light-to-current inversion.
Comparative example 1
As shown in Figure 1, do not adopt the structure of functional layer, comprise substrate 1, battery 9, gluing layer 6 ' are PUR (EVA), and backboard 7 ' material is the TPT film.The comprehensive production cost that calculates like this comprises energy consumption and material consumption, all is higher than the battery module among the embodiment.
As mentioned above, according to the present invention, can provide high power, aesthetic appearance is good, film solar battery module with low cost.
Claims (6)
1. thin-film solar cells, comprise the substrate (1) that is arranged in order, preceding electrode (2), semiconductor layer (3), back electrode (4), gluing layer (6), backboard (7), it is characterized in that: also comprise a functional layer (5), be located between back electrode (4) and the gluing layer (6), the material of described functional layer (5) is wherein a kind of of silicon dioxide, aluminium dioxide, silicon nitride; The composition of described gluing layer (6) is an epoxy resin; The composition of backboard (7) is fiberglass or polymethyl methacrylate.
2. thin-film solar cells as claimed in claim 1 is characterized in that: the thickness≤0.5mm of described gluing layer (6).
3. thin-film solar cells as claimed in claim 1 is characterized in that: when described backboard (7) was fiberglass, its thickness was 0.5～1mm.
4. thin-film solar cells as claimed in claim 1 is characterized in that: when described backboard (7) was polymethyl methacrylate, its thickness was 1～3mm.
5. thin-film solar cells as claimed in claim 1 is characterized in that: described functional layer (5) is one or more layers.
6. the preparation method of a thin-film solar cells as claimed in claim 1 is characterized in that may further comprise the steps:
1) goes up the structure that forms preceding electrode (2), semiconductor layer (3) and back electrode (4) by the technology of film forming and laser ablation at substrate (1);
2) good to lamination substrate (1) carries out the edging processing, and the edging width is 5～15mm, picks out the lead-in wire of electrode;
3) upward establish a functional layer (5) at back electrode (4) by the method for chemical vapour deposition (CVD) or magnetron sputtering;
4) go up the gluing layer (6) that evenly coating mixes in functional layer (5), cover backboard (7), under the condition that vacuumizes, utilize laminater to carry out lamination, gluing layer (6) thickness≤0.5mm;
5) leave standstill gluing layer (6) is solidified, carry out the edge sealing frame and handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100426668A CN101404297B (en) | 2008-09-09 | 2008-09-09 | Thin-film solar cell and its production method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100426668A CN101404297B (en) | 2008-09-09 | 2008-09-09 | Thin-film solar cell and its production method |
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| Publication Number | Publication Date |
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| CN101404297A CN101404297A (en) | 2009-04-08 |
| CN101404297B true CN101404297B (en) | 2010-09-01 |
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| CN2008100426668A Expired - Fee Related CN101404297B (en) | 2008-09-09 | 2008-09-09 | Thin-film solar cell and its production method |
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| EP2388830A1 (en) | 2010-05-20 | 2011-11-23 | Fundacion Inasmet | Photovoltaic modules and method of manufacture thereof |
| CN109326667B (en) * | 2017-07-31 | 2021-11-16 | 上迈(镇江)新能源科技有限公司 | Green electricity building material based on packaging material and preparation method thereof |
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